US 11,938,506 B2
Piston, cartridge, dispenser
Richard Lavelanet, Balgach (CH); and Hayden Turner, Ayer, MA (US)
Assigned to MEDMIX SWITZERLAND AG, Haag (CH)
Appl. No. 17/442,714
Filed by Sulzer Mixpac AG, Haag (CH)
PCT Filed Feb. 10, 2020, PCT No. PCT/EP2020/053229
§ 371(c)(1), (2) Date Sep. 24, 2021,
PCT Pub. No. WO2020/192995, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 19165177 (EP), filed on Mar. 26, 2019.
Prior Publication US 2022/0184654 A1, Jun. 16, 2022
Int. Cl. B05C 17/005 (2006.01)
CPC B05C 17/00576 (2013.01) [B05C 17/00583 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A piston for a support sleeve of a dispensing assembly comprising a film bag cartridge, the piston comprising:
an at least substantially cylindrical outer shape;
a piston body; and
first and second film bag retainers arranged at opposite sides of the piston body, the first and second film bag retainers formed from materials more flexible than a material of the piston body, or
the first and second film bag retainers comprising components designed to be more flexible than parts of the piston body.